CAJ | 학술논문

寻北仪在军事和民用等领域发挥着重要的作用,为了短时间内提供载体航向信息,设计了一种动态捷联式寻北仪.系统主要由一个单轴光纤陀螺、一个石英加速度计和一个旋转平台组成.在静基座条件下,使旋转平台绕垂直轴恒速单向旋转,通过对陀螺和加速度计输出数据的动态特性进行分析,设计了基于正交检测技术的快速寻北方案,能有效抑制惯性元件的漂移噪声,并且旋转平台可以免去复杂的调整水平过程.仿真结果表明,寻北仪转速设置为3(°)/s,在120 s 内给出载体航向信息,精度优于30″,同时也能输出一定精度的水平姿态信息.
심북의재군사화민용등영역발휘착중요적작용,위료단시간내제공재체항향신식,설계료일충동태첩련식심북의.계통주요유일개단축광섬타라、일개석영가속도계화일개선전평태조성.재정기좌조건하,사선전평태요수직축항속단향선전,통과대타라화가속도계수출수거적동태특성진행분석,설계료기우정교검측기술적쾌속심북방안,능유효억제관성원건적표이조성,병차선전평태가이면거복잡적조정수평과정.방진결과표명,심북의전속설치위3(°)/s,재120 s 내급출재체항향신식,정도우우30″,동시야능수출일정정도적수평자태신식.
North seeker plays an important role in military and civilian fields. With the purpose of providing heading information rapidly, a dynamic strapdown north seeker system was designed, which consists of a single axis fiber optic gyroscope, a quartz-accelerometer and a rotating platform. Based on static base, the rotating platform was made to rotate at the constant rate and in the same direction about the vertical axis. According to the data’s dynamic characteristics of gyroscope and accelerometer, the rapid north seeker scheme based on the orthogonal detection technology was designed. This scheme can effectively suppress the drift noise of the inertial components and free the rotating platform from complex leveling process. Simulation results show that the north seeker, when with 3(°)/s angular rate, can give the heading information in 120 s with the accuracy being superior to 30″, and it can also provide the level attitude information.